iC-SM2L

LINEAR AMR SENSOR (2 mm)

Rev C1, Page 2/8

DESCRIPTION

iC-SM2L is a linear position sensor which operates

on the AMR effect (anisotropic magneto resistance)

and has been designed to work with magnetic scales

which have a N/S pole pitch of 2 mm.

When the Sensor is moved along a magnetic scale

with a N/S pole pitch of 2 mm the two Wheat-

stone bridges generate differential sinusoidal out-

put voltages (PSIN - NSIN) and (PCOS - NCOS)

phase-shifted at 90°. One sine/cosine cycle averaged

using a pair of N/S poles is thus produced for a pole

width. The absolute magnetic field strength must be

large enough for the sensor to go into saturation and

for the magnetization of iC-SM2L’s resistor stripes to

assume the direction of the outer magnetic fields.

The amplitudes of the differential output voltages are

largely independent of the magnetic field strength and

thus not sensitive to changes in distance.

iC-SM2L is resistant to strong magnetic fields and not

sensitive to external homogenous magnetic fields.

PACKAGING INFORMATION

PIN CONFIGURATION

TOP VIEW

<A-CODE>

BOTTOM VIEW

1

6

5

4

3

2

dra_sm2c-sm2l_b_pack_3, 8:1

Platzhalter für Gehäuse Beschriftung:

Procuct-Code

Assembly-Code

Date-Code

Lage und Anzahl bei Mb erfragen!

25.04.2014, HMS

<P-CODE>

<D-CODE>

PIN FUNCTIONS

No. Name Function

1 NCOS Inverted Cosine Output

2 PCOS Noninverted Cosine Output

3 VCC

Supply Voltage

4 GND

Ground

5 NSIN Inverted Sine Output

6 PSIN

Noninverted Sine Output

IC top marking: <A-CODE> = assembly code (subject to changes).